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(No Model.) 3 Sheets-Sheet 1.

H. E. SMYSER. MECHANISM. FOR APPLYING ADHESIVES T0 PAPER. No. 561,141.

Patented June 2, 1896.

INVENTOR: Q"?! 2- {w By his Attorneys, m.@r\mm WITITZSES; 5. v Mi? ANDREW BJ'SRANAM. PIIMO-UTNQWASNINGTOK D C,

l'No Model.) I 3 Sheets-Sheet 2.

H. E. SMY$ER.

MECHANISM FOR APPLYINGIADHESIVES T0 PAP-ER. N0, 561,141; Patented June 2, 1896.

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' (No Model.)

7 MEGHANISM FOR APPLYING ADHESIVES T0 PAPER.

No. 561,141; Patented June 2, 1896,

FIG 13. FIG. 12.

WITNESSES: INVENTOR: i

fiwmfimmm 1 6 ANDREW ILGRAHAM PKO'TO-UTHQWASNI NGION. u.c

UNITED STATES PATENT O FICE.

HENRY E. SIWIYSER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO ARBUCKLE BROTHERS, OF NEIV YORK, N. Y.

MECHANISM FOR APPLYING ADHESIVES TO PAPER.

SPECIFICATION forming part of Letters Patent No. 561,141, dated June 2, 1896. Application filed November 16, 1894. Renewed September 25, 1895. Serial No. 563,664. (No model.)

To all whom it may concern:

Be it known that I, HENRY E. SMYsER, a citizen of the United States, residing in Philadelphia, (Germantowm) in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Mechanism for Applying Adhesives to Paper, &c., of which the following is a specification.

This invention relates to what maybe called pasting or gluing mechanism for applying paste, glue, or other adhesive substan cc to paper, cardboard, wood, cloth, or other suitable or analogous substance. Although applicable to a great variety of machines wherever it is required to apply glue, paste, or other cementitions substance to sheets, plates, or boards, the improved mechanism provided by my invention is especially designed and adapted for use in machines for making paper boxes, bags, envelops, or the like. My improved mechanism has been found especially advantageous for the application of glue, for which use it successfully overcomes the difficulties heretofore inherent in the use of glue, and especially those due to its disposition to form threads or filaments and to dry prematurely and choke the mechanism.

According to my invention a mass of the paste, glue, or other adhesive substance is kept in a suitable open-topped vessel, being heated, if necessary, to retain it in suitable condition for working. A plate or plunger moves down into the mass of glue, &c., so as to be submerged therein, and then rises above the same and pauses while the surplus glue is removed by means of a scraper which rubs over the surface of the plungerfland leaves only a suitably thin film adhering thereto.

By a further movement a dabber is brought into contact withthe surface of the plunger, so that it takes from this surface a portion of the glue, after which by a further movement the dabber is brought into contact with the sheet, plate, or other article to which the glue, due, is to be applied and presses the glue against the surface thereof, so as to leave a suitable film adhering thereto, whereupon the dabber is separated from this surface. The

plunger meanwhile redescends into the mass of glue and the operation is repeated.

I will now proceed to describe my'invention with respect to two different embodiments thereof illustrated in the accompanying drawings, wherein Figures 1 to 11, inclusive, illustrate the first construction or embodiment of my invention and Figs. 12 to 15, inclusive, illustrate a second embodiment thereof. Fig. 1 is an elevation, partly in section, affording a general View of the entire mechanism. Fig.2 is aplan thereof, partly in horizontal section. Figs. 3, 4, and 5 are fragmentary sectional elevations showing the operative parts in different successive positions. Fig. 6 is afragmentary elevat-i on, on a larger scale, showing the dabbers and part of their operative mechanism. Fig. 7 is a horizontal transverse section on the line 7 7 in Fig. 6. Fig. 8 is a plan of the plunger. Fig. 9 is a plan of the two dabbers and their rotative shafts and pinions disconnected. Fig. 10 is a plan of a modified construction of plunger. Fig. 11 is a vertical transverse section, on a larger scale than Fig. 1, showing the scraper. Of the views showing the second construction, Fig. 12 is a sectional elevation showing the mechanism in full lines in one position and in dotted lines in other successive positions. Fig. 13 is a similar View showing still other positions .of the mechanism. Fig. 14 is a plan of Fig. 13. Fig. 15 is a vertical section on the line 15 15 in Fig. 13.

I Willfirst describe the construction shown in Figs. 1 to 11, which embodies all features of my invention. V

Let A designate the tank or vessel containing the adhesive material, which for the purposes of this description I will assume to be glue.

Let B designate the sheet of paper, cardboard, muslin, pasteboard, or other material, which for the purposes of this description I will assume to be paper, to which the glue is to be applied, which sheet is mountedor sus tained in position by any suitable means, which, as such means are well understood in the art, I have not deemed it necessary to show.

Let C designate the plunger, consisting in this construction of a plate arranged horizontally and moving in a vertical direction, so as to be plunged down into the glue and raised above it.

Let D designate what I call the dabber, by which the glue is taken from the plunger and applied to the sheet of paper.

In the construction shown the glue-vessel A is stationary and the plunger 0 moves vertieally, descending into the mass of glue and rising above it at suitable intervals. To impart the necessary movements, the plunger is connected by a post a to a vertical slide E, shown as a sliding bar, which slide is connected by a link Z) with a lever U, which is fulcrumed at c and driven by a cam C 011 the lever is pivoted an antifriction-roller c, which travels in a cam-groove in the face of the cam by which the desired movements are imparted to the lever. Starting with the position where the plunger is immersed in the glue, as shown in Fig. 4, the plunger-slide first rises sufiiciently to bring the plunger out of the glue to the posit-ion shown in Fig. 5, where it pauses to permit the excess of glue to drain oil from the plunger and fall back in to the vessel. \Vhile in this position a scraper or wiper F moves across the upper face of the plunger in order to remove any excess of glue from its surface. This scraper F is constructed with a blade f, attached to a horizontally-moving slide G, and with an adjusting screw or screws 9, (see Fig. 11,) by means of which the scraping edge of the blade may be raised or lowered in order to adjust the thickness of the film of glue that shall re main on the plunger after the scraping operation. While the plunger dwells in this position the scraper is moved horizontally over it in the manner indicated in Fig. 5. \Vhen the scraper is moved past it to the position shown in Fig. 1, the plunger again rises, as shown in Fig. .1, and continues moving until it comes in contact with the dabber D, which stands above it, so that by this contact it applies a film of glue to the under surface of the dabber. The plunger then descends with a continuous movement until it is again submerged in the bath of glue. The scraper F is operated from a cam F through the medium of aleverF, pivoted at d and connected to the slide G by a link (1. The dabber D is in this embodiment of my invention of somewhat peculiar construction, and has several movements. The dabber consists of two wings or leaves pivotally connected so as to either turn out fiat, as shown in Fig. 1, or swing in against each other in order to em brace the sheet of paper between them, as shown in dotted lines in Fig. 1. They are shown in an intermediate position in Fig. 6. The movements of the dabber-wings are as follows: Starting from the fully-open position shown in Fig. 1, where they receive glue from the plunger, they first move bodily to the left to the position shown in Fig. 3. They then move downward to the position shown in dotted lines in Fig. 4, where they stand close abovethe upper edge of the sheet of paper. The two wings then swing inward around their common pivotal axis until they embrace the upper edge or portion of the sheet of pa per between them and apply the glue thereto. They then unfold or swing open and then rise bodily and then move bodily to the right, stopping again in the position for receiving glue.

The detail construction of the dabber thus described is as follows: The two wings 7t h consist of flat plates having projections i wherever it is desired to apply the glue. Both wings are pivoted to turn around the same axial stud j, which is fixed to and projects from the outer end portion of a horizontallymoving slide H. The wing h has a hub 7a, which is keyed upon a sleeve or tubular shaft 7a, which turns freely 011 the stud j, and on the inner end of which is formed a pinion 71: The other wing h is mounted directly on a sleeve Z, which turns freelyaround the sleeve k, and on the end of which is formed a pinion Z The wings are caused to turn out and in by a pair of racks in and m engaging the respective pinions k and Z these racks being fixed to a vertically-moving slide I, guided in slideways formed 011 the slide II. The move ments of this slide are imparted by a cam IF, acting through a lever I and link on). The lever I is pivoted at n, and has an antifriction-roller n engaged by the cam-groove in said cam.

The horizontally-moving slide III is for the purpose of moving the dabber from the gluereceiving position to the position over the paper. This slide is moved from a cam 11*, arranged behind the cam 1, its cam-groove being shown in dotted lines in Fig. 1. This cam-groove engages a roller on the end of a lever 11, pivoted at "a, the'other arm of which is connected by a link 12. to the slide II.

The vertical bodily movements of the dabber over the paper are imparted by means of a verti(-.ally-moving slide J, having slideways carrying the slide II. The slide J derives motion from a cam J arranged behind the cam C its cam-groove being shown in dotted lines in Fig. 1, and engaging a roller on a lever J, pivoted at 0, and its end connected by a link 0 to the slide J.

The several cams 11 1 C J and F are all revolved synchronously in the direction. indicated by the arrows, being driven through any suitable driving mechanism.

The operation of these several parts together is as follows; I will commence with the position shown in Fig. 1, where the plunger G is ascending to carry the glue to the dabber and all the other parts are stationary. \Vhen the plunger reaches the dabber, it stops, and after a slight dwell commences to descend. The dabber then, by a movement of the slide H, moves to the left from the position shown in Fig. 1 to that shown in Fig.

'IIO

3. During this movement the plunger 0 has descended into the glue vessel, as shown. The slide J then descends, carrying the dabber down to the position shown in full lines in Fig. 4, and during this movement the plunger 0 continues to move down in the bath of glue and the scraper F advances over the plunger to the position shown in Fig. 4. Next the slide I is caused to descend, so that through the action of the racks which it carries upon the pinions of the dabber-wings these wings are caused to swing inward to the position shown in dotted lines in Fig. 4, so that they embrace the paper on opposite sides and press it between them, so as to apply the glue to the paper on both sides thereof. After a brief dwell in contact with the paper the wings open out again, being shown in Fig. 5 in the act of so doing. Meanwhile the plunger O has ascended to the position shown in Fig. 5, where it stops. The scraper F then moves back, its edge moving across the top of the plunger to scrape off the excess of glue. The'dabber-wings when fully open are then raised by the return movement of the slide J, and the .slide H then moves to restore the dabber to its first position over the plunger 0. This plunger, as 'soon as the scraper F has passed across it, has meanwhile started to reascend and again meets the dabber, and applies glue to it shortly after the latter has come to rest. The same cycle of operations is then repeated.

When working with glue, it is usually preferable to apply the glue in small dots, for which purpose I prefer to provide the wings of the dabber D with small isolated projections 1', as shown in Figs. 6 and 9. The shape of the wings of the dabber will of course depend upon the shape of the space to which it is desired to apply glue on the paper. If glue is to be applied to only one side of the paper, only one wing of the dabber must receive glue from the plunger, to accomplish which result that portion of the plunger which otherwise would come in contact with the other wing must be cut away. This is indicated in Fig. 10, where the portion indicated in dotted lines is entirely removed, so that it cannot carry any glue to the wing 72. In this case this wing servessolely as a presser or platen for holding the paper, While the wing it presses against it to apply glue to its other side. In some cases it is desirable to apply only a narrow band of glue, in whichcase the wing .remove the excess of paste.

449,275, dated March 31, 1891, and subsequent patents. The precise application of my present invention, in connection with the other mechanism of such machine, will beset forth in another application for patent for automatic packaging-machines now in course of preparation. Mypresent invention,however, I .is not confined in its application to the combination of mechanism hereinbefore described, but may be greatly varied by its apapplication in connection with various other mechanisms.

Figs. 12 to 15 show a construction which is especially adapted for the application of paste. In these figures the paste vessel is lettered A the plunger is lettered C and the dabber is lettered D The scraper is lettered F All the operative parts are shown in Fig. 12 but I have not deemed it necessary to show the cams and mechanical connections for imparting motion to them, as these will not differ, essentially, from those specifically shown in Fig. 1, it being within the province of any mechanic to design suitable mountings for the slides and a suitable arrangement for the cam levers and links, and to plot or develop the proper shape for the cam-grooves. The plunger 0 moves vertically, as before, having precisely the movements already described, except that it does not rise so high. It is shown immersed in the paste in full lines in Fig. 13, and in dotted lines it is shown as having risen just above the mass of paste, though still within the vessel A in which position it dwells while the scraper F slides over it to The scraper in this construction is mounted on a radial arm projecting from an oscillating shaft F its movement being otherwise the same as before described. After the scraper has passed out of the way the plunger C rises to the position shown in full lines in Fig. 12, where it dwells while the dabber D descends upon it and picks up the paste from its surface. The dabber then rises to the position shown in dotted lines in Fig. 12 at D, then moves or swings over to the position shown at D, and then descends to the position shown at D, where it comes upon the paper B lying on a table K, so that it applies the paste to the paper, after which it rises to the position D moves again to D and descends again into contact with the plunger, which meanwhile has redescended into the paste to receive a fresh coating.

The apparatus may be otherwise modified without departing from what is essential to my invention, as hereinafter defined in the claims. It is within my invention to apply the glue from the plunger to the dabber by the moving of the plunger against the dabber while the latter is stationary, an example of which is shown in Figs. 1 to 11, or, on the contrary, by moving the dabber down into contact with the plunger while the latter is at rest, an example of which is shown in Figs. 12 to 15. Instead of moving the dabber to carry the glue or other substance to the pa- IIO per the paper may be moved against the dabber the latter remaining stationary during this movement of the paper. In fact, it is not essential to my invention that the dabber should move at all, as a wholly stationary dabber might be employed, the plunger moving far enough to apply the adhesive to it, and the paper being then moved against it. Other purely mechanical or structural modifications may be resorted to by the mechanic or designer in adapting my invention for different uses or applications.

My invention introduces important practical advantages in the working both of glue and paste, as well as other cementitious substances. The movement of the plunger into the mass of glue or paste at every stroke prevents any of the adhersive material from drying upon its surface. The removal of the excess of adhesive material from the plunger by scraping the excess from its surface avoids the applying of an excessive quantity of adhesive to the paper and the squeezing of any excess beyond the proper surface of the dabber, which would gradually enlarge the active surface thereof, and also in the ease of glue tends to avoid the drawing of the glue into threads upon the separation of the respective surfaces. The formation of these threads or filaments of partly dried glue, whichoften form in great numbers and which almost instantly dry and harden in the air as they are drawn out, has proven a source of great difficulty in machines where it has been attempted to apply glue in small quantities to paper or the like. The dabber by having it surfaces restricted to the exact area upon which the glue is desired to be applied to the paper, and having this surface alone come in contact with the glue-coated surface of the plunger, is continuallyremoistened from the plunger and moves therefrom to the paper so quickly that the glue cannot dry before being applied to the paper.

In practical operation my improved mechanism has proved itself to successfully overcome all diiiiculty from the drawing of the glue into threads or filaments,or from the caking, choking, or obstructing of any of the parts by dried glue. Vhen the machine is stopped at night, the plunger is lowered into the glue vessel, and the latteris covered over to prevent evaporation, the gluing-surfaces of the dabber being wiped clean. By this means the entire quantity of glue is preserved in good condition for commencing work when the machine is again started, and without waste or loss.

I claim as my invention the following-defined novel features, substantially as hereinbefore specified, namely:

1. The combination of a vessel containing adhesive material, a plunger movable down beneath the surface of the adhesive, and up above its surface, a dabber receiving adhesive from the plunger and transferring it to the sheet to be gummed, mechanism for moving the plunger adapted to cause it to dwell in its upstroke after emerging from the adhesive bath, and a scraper movable across the surface of the plunger during its dwell to remove from it the excess of adhesive material.

2. The combination of a vessel containing adhesive material, a plunger movable down beneath the surface of the adhesive and up above its surface, a dabber receiving adhesive from the plunger in its latter position, and adapted to apply it to the sheet to be gummed, said dabber constructed with. folding wings, and a mechanism for swingin gthe wings of the dabber from their open position for receiving adhesive, to a closed position for pressing it into contact with the sheet.

3. The combination of a vessel containing adhesive material, a plunger movable down beneath the surface of the adhesive, and up above its surface, and a dabber receiving adhesive from the plunger in its latter position and adapted to apply it to the sheet to be gummed, said dabber constructed with folding wings and movable laterally, and mechanisms for swinging the wings of the dabber and for moving it bodily in lateral direction.

4. The combination of a vessel containing adhesive material, a dabber constructed with folding wings, means for applying adhesive to said dabber while its wings are open, and mechanism for swinging the wings of the dabber to close them upon the sheet to which the adhesive is to be applied.

5. The combination of a vessel containing adhesive material, a dabber constructed with folding wings, means for applying adhesive to one of the wings only of said dabber, and mechanism for swinging the wings of the dabber from their open position for receiving adhesive to close them upon the sheet to be gum med, whereby adhesive is applied by one wing to one side of the sheet, while the other wing serves to press the sheet against the coated Wing.

(5. The combination of a vessel containing adhesive material, a plunger movable down beneath the surface of the adhesive, and up above its surface, a dabber receiving adhesive from the plunger and adapted to apply it to the sheet to be gummed, a laterally-movin g slide carrying said dabber, and said dabber constructed with folding wings and a mechanism for swinging said wings toward or from each other.

7. The combination of a vessel A, a vertically-movable plunger 0, a dabber l), a horizontally-movable slide II carrying it, a vertically-movable slide J carrying the slide II, and a driving mechanism for reciprocally moving the respective parts, whereby to convey adhesive material by the plunger to the dabber and thence transfer it by movements of the slides carrying the dabber to the paper.

8. In a mechanism for applying adhesive, a dabber D for receiving the adhesive material and transferring it to the sheet to be gummed, constructed with two folding wings h h each mounted to turn on a pivotal axis, a cam for opening and closing said Wings, and intervening connections for communicating motion from said cam to said wings.

9. In a mechanism for applying adhesive, a dabber D for receiving the adhesive material and transferring it to the sheet to be gummed, constructed with two folding wings h h each mounted to turn on a pivotal axis, and provided with pinions, and means for swinging said wings toward and from each other consisting of a slide, two opposite racks carried by said slide and engaging the respective pinions, and mechanism for moving said slide.

10. In a mechanism for applying adhesive, a dabber D for receiving the adhesive material and transferring it to the sheet to be gummed,

constructed with two folding wings h h mounted to turn both on the same axis, an axial stud j, the tubular sleeve is turning on said stud and carrying one of said wings, the tubular sleeve Zturning on said sleeve and carrying the other wing, pinions on said 

